CannotWait vs Must
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CannotWait
Track important upcoming and past events with a modern, user-friendly countdown and day counter. See precise days remaining or elapsed, with detailed time views and customizable designs. Share event snapshots and use home screen widgets.
- Precise day countdowns
- Days since/day counter
- Detailed time view (seconds to days)
- Event photo collection
- Shareable event snapshots
- Home and lock screen widgets
- Customizable design
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Never miss a moment that truly matters. CannotWait is your personal day counter and date tracker, showing you exactly how many days are left until your next big moment, or how much time has passed since a special event. A countdown to a birthday, days since your anniversary, or an approaching deadline? Everything at a glance. DAY COUNTER & DATE TRACKER Add any event and instantly see how many days are left or have already passed. Perfect for birthdays, anniversaries, vacations, projects, and personal milestones. DETAILED TIME BREAKDOWN View the remaining or elapsed time in seconds, minutes, hours, and days, exactly as precise as you need it. PHOTO MEMORIES CannotWait automatically pulls matching photos from your Photo Library for past events, building a beautiful visual timeline of all your milestones. SHARE Capture a snapshot of your countdowns and share them with your friends. WIDGETS Keep track of your most important dates right on your Home Screen or Lock Screen. SIRI AI & SHORTCUTS CannotWait is optimized for Siri AI, when available on your device. Just ask: "Hey Siri, how many days until my vacation?". Create events, check any countdown hands-free, and build your own automations using the Shortcuts app. CUSTOMIZABLE DESIGN Choose from various color schemes and backgrounds to style the app to your taste. CannotWait’s design is fully optimized for Liquid Glass. PRIVACY COUNTS TOO No tracking with data linked to you and no fingerprinting. Your events are never shared with, sold to, or analyzed by any third parties. MADE BY A REAL HUMAN CannotWait has been actively built for over five years by an independent developer with deep experience and a passion for iOS development. Download for free today and support independent, human-made software.
Must
Transform calendar events and future dates into system alarms that ring even on Silent or Focus modes. Set one-time alarms for appointments or tasks, with options for early reminders and customizable snooze durations. Unlock advanced features like unlimited alarms and recurring options with a one-time purchase.
- Calendar events as alarms
- Alarms for any future date
- Early heads-up notifications
- Customizable snooze durations
- Unlimited alarms (Pro)
- Recurring alarms (Pro)
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Turn appointments and calendar events into alarms that ring through Silent and Focus. Choose an event from Apple Calendar, or set an alarm for any future date and time. CALENDAR EVENTS THAT RING • Browse upcoming events from Apple Calendar • Choose an event and create a separate system alarm • Add an optional early heads-up before the event • Calendar details are copied when you create the alarm; later calendar edits do not update it automatically ALARMS FOR ANY FUTURE DATE • Set a one-time alarm for an appointment, meeting, task, or deadline • Choose the date and time you need • Stop the alarm or snooze for 5 minutes • Search and review your active and past alarms FREE TO START • Keep up to two active alarms • Create manual or calendar-based one-time alarms • Add a 5-minute or 10-minute early heads-up • View local alarm activity insights MUST-RING PRO — ONE-TIME PURCHASE • Keep unlimited active alarms • Repeat daily, on weekdays, or weekly on a selected weekday • Choose custom early heads-up timing • Snooze for 10, 15, 30 minutes, or a custom duration • Explore private calendar insights for your recent schedule One-time purchase. No subscription. PRIVATE BY DESIGN Alarm titles, notes, calendar names, event details, and scheduled times stay on your device. Calendar access is used to create alarms and calculate insights locally. Anonymous product analytics may be used to improve the app, but it does not include your calendar or alarm content. No account is required. Requires iOS 26 or later. Must-Ring uses Apple’s AlarmKit. Alarm behavior depends on Alarm permission, successful scheduling, and device settings. Must-Ring is not intended for medical, emergency, or safety-critical alerting.
Screenshots
Verdict
The clearest difference is rating: CannotWait at 5.0 against Must's 3.0. CannotWait also leads on in-app purchases (none vs 2) and iOS requirement (17.0 vs 26.0). On price, ratings volume, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Must sells 2 one-off in-app purchases. CannotWait asks for nothing beyond the download.
CannotWait holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
CannotWait ships an update monthly, Must every 2 months. Both last shipped on October 24, 2026.
| Parameter | CannotWait | Must |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 3.0 (1 ratings) |
| Positive reviews | 87.5% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 26 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Vincent Friedrich | 紫妍 连 |
Customer experience
CannotWait
Must
In-app purchases
CannotWait
No in-app purchases
Must
- Must-Ring Pro (Founding Offer)$4.99
- Must-Ring Pro$9.99









